Hugh M. Thomas

“Stephen Morillo, one of the leading military historians of Anglo-Norman England, rejected the “great man” approach in his introduction to a series of extracts and articles on the Battle of Hastings. Noting that William had benefited from a contrary wind that delayed his attack until Harold Godwineson had been drawn north by a threat from a third claimant, Harald Hardrada of Norway, Morillo invoked the idea of chaos theory, which describes how small, even random, factors can sometimes have a huge effect on larger systems. Drawing on the quip of another scholar, John Gillingham, he wondered if William, who was sometimes called William the Bastard, due to his illegitimate birth, ought really to be known as William the Lucky Bastard.2”
― Hugh M. Thomas, The Norman Conquest: England after William the Conqueror